EP3796096B1 - Appareil de formation d'images - Google Patents

Appareil de formation d'images Download PDF

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Publication number
EP3796096B1
EP3796096B1 EP20196952.4A EP20196952A EP3796096B1 EP 3796096 B1 EP3796096 B1 EP 3796096B1 EP 20196952 A EP20196952 A EP 20196952A EP 3796096 B1 EP3796096 B1 EP 3796096B1
Authority
EP
European Patent Office
Prior art keywords
supporting member
section
image forming
forming apparatus
belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20196952.4A
Other languages
German (de)
English (en)
Other versions
EP3796096A1 (fr
Inventor
Taiki MATSUMOTO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
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Konica Minolta Inc
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Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of EP3796096A1 publication Critical patent/EP3796096A1/fr
Application granted granted Critical
Publication of EP3796096B1 publication Critical patent/EP3796096B1/fr
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support
    • G03G15/1615—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support relating to the driving mechanism for the intermediate support, e.g. gears, couplings, belt tensioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2002/012—Ink jet with intermediate transfer member
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1654—Locks and means for positioning or alignment

Definitions

  • the present invention relates to an image forming apparatus.
  • An image forming apparatus including an endless belt and an image forming section that forms an image in an image forming area facing the belt member is known.
  • JP H08-156353 A discloses a configuration that supports a range corresponding to an image forming area of the belt member with two rollers. This configuration enables to restrain a fluctuation in tension of the belt member when adjusting a gap between the belt member and the image forming section in the range.
  • US 6 594 560 B1 and US 2003/076405 A1 disclose printing systems in which a rotatable endless photoreceptor belt is mounted on a pair of belt rollers so as to be free of any support in between the belt rollers.
  • the belt in order to maintain a desired substantially consistent lateral registration, is sensed with respect to the lateral misregistration of the belt and a low and substantially constant lateral positional corrective force is applied to the belt in response to the sensed lateral misregistration in one of the two directions axial of the axial belt roller.
  • a lateral run-out of the endless belt is compensated by laterally shifting one of the rollers according to a measured lateral run-out.
  • JP 2010 042628 discloses a printing system in which an endless conveying belt is pushed upwards from an inner periphery side.
  • both end sections in an axial direction of the roller member are fixedly supported to a predetermined section of the apparatus.
  • a central part in the axial direction of the roller member is lowered by its own weight, thereby causing the roller member to deform to a state in which the central part is deflected, and there is a risk that the belt member deflects accordingly. Consequently, the flatness of the belt member cannot be secured, and moreover, there is a risk that the gap between the belt member and the image forming section cannot be accurately adjusted. Further, there is another risk that the configuration becomes complicated when an adjustment mechanism is provided in order to eliminate the deflection of the belt member.
  • An object of the present invention is to provide an image forming apparatus that is capable of securing flatness of a belt member by a simple configuration.
  • an image forming apparatus with the features of claim 1 which includes:
  • FIG. 1 is a diagram illustrating a schematic configuration of an image forming apparatus 1 according to the embodiment of the present invention.
  • image forming apparatus 1 is an ink jet image forming apparatus including belt conveying device 2, recording head 3, supporting members 4, and the like.
  • Belt conveying device 2 includes endless conveying belt 23 of a predetermined width suspended under tension around driving roller 21 and driven roller 22 that are disposed in parallel at a predetermined interval.
  • the upper surface of conveying belt 23 suspended around driving roller 21 and driven roller 22 is a mounting surface for placing recording medium P in close contact therewith.
  • Conveying belt 23 corresponds to "belt member" of the present invention.
  • conveying belt 23 is coated with an adhesive so called "Jibari" in order to place recording medium P being conveyed in close contact with the upper surface of conveying belt 23.
  • Driving roller 21 is driven by a sub scanning motor (not shown).
  • driving roller 21 rotates at a predetermined speed in a counterclockwise direction (see an arrow) in FIG. 1 by a rotational drive of the sub scanning motor, thereby causing conveying belt 23 suspended around driving roller 21 and driven roller 22 to rotationally move.
  • recording medium P mounted on the upper surface of conveying belt 23 is conveyed in a direction of arrow A, which is a sub scanning direction, in the figure.
  • Recording medium P recording medium commonly used in inkjet recording, such as paper, fabric, plastic films, glass plates, and the like, can be used.
  • Recording medium P may be a sheet-like medium cut to a predetermined size, or may be a long medium continuously fed out from an original winding wound in a roll shape.
  • a belt cleaning device (not shown) is provided on the other side of a conveying surface of recording medium P in belt conveying device 2.
  • the belt cleaning device removes a foreign substance adhering to conveying belt 23.
  • Recording head 3 includes a plurality of ink jet heads, and is disposed at a predetermined interval so as to face above the surface of conveying belt 23 where recording medium P is placed. Recording head 3 ejects ink droplets from a number of nozzles provided on its lower surface to a predetermined image forming area.
  • the predetermined image forming area is a facing area of recording head 3 and conveying belt 23.
  • the length of the predetermined image forming area in a conveying direction of conveying belt 23 corresponds to the length of recording head 3 in the conveying direction.
  • Recording head 3 records a desired image on recording medium P that is conveyed by a rotational movement of conveying belt 23 and passes through the image forming area. Recording head 3 corresponds to "image forming section" of the present invention.
  • a shuttle-type recording head is used as recording head 3 in the present embodiment.
  • the shuttle-type recording head refers to one that is mounted at a carriage (not shown) and reciprocates in a main scanning direction orthogonal to a conveying direction of recording medium P that is intermittently conveyed.
  • driving of driving roller 21 is controlled so that conveying belt 23 performs an intermittent operation of repeating a standby state and a driving state.
  • recording head 3 may be a line-type recording head that is suspended fixedly in a width direction of conveying belt 23 and records images by ejecting ink droplets onto recording medium P that is continuously conveyed.
  • driving of driving roller 21 is controlled so that conveying belt 23 continuously moves (rotationally operates).
  • Supporting members 4 are each a member that supports a position corresponding to the image forming area of conveying belt 23 from the inner periphery side of conveying belt 23. Supporting members 4 are provided at two positions in the conveying direction: an upstream side and a downstream side of the image forming area. Details of supporting member 4 will be described later.
  • tension roller 5 is provided at an opposite side to supporting member 4 on the inner peripheral surface of conveying belt 23.
  • Tension roller 5 is a roller that applies tension to conveying belt 23.
  • a roller provided on the inner peripheral surface of conveying belt 23 may be a roller that corrects meandering of conveying belt 23.
  • FIG. 2 is a block diagram indicating a main functional configuration of image forming apparatus 1.
  • Image forming apparatus 1 includes control section 100, recording head driving section 110, conveyance driving section 120, and input/output interface 130.
  • Control section 100 includes a central processing unit (CPU) 101, a random access memory (RAM) 102, a read only memory (ROM) 103, and storage section 104.
  • CPU central processing unit
  • RAM random access memory
  • ROM read only memory
  • CPU 101 reads a program and setting data for various controls stored in ROM 103, stores them in RAM 102, executes the program, and performs various arithmetic processing.
  • CPU 101 also integrally controls an entire operation of image forming apparatus 1.
  • RAM 102 provides CPU 101 with a working memory space and stores temporary data. Note that RAM 102 may include a nonvolatile memory.
  • ROM 103 stores a program and setting data for various controls executed by CPU 101. Note that instead of ROM 103, a rewritable nonvolatile memory such as an electrically erasable programmable read only memory (EEPROM) or a flash memory may be used.
  • EEPROM electrically erasable programmable read only memory
  • Storage section 104 stores a print job (an image recording instruction) input from an external device 140 through input/output interface 130 and image data related to the print job.
  • a hard disk drive HDD
  • DRAM dynamic random access memory
  • Recording head driving section 110 supplies a driving signal corresponding to image data at an appropriate timing to recording head 3 based on a control of control section 100, and thereby an amount of ink corresponding to a pixel value of the image data is ejected from a nozzle of recording head 3.
  • Conveyance driving section 120 supplies a driving signal to a sub scanning motor of driving roller 21 based on the control of control section 100, thereby rotationally moving conveying belt 23 at a predetermined speed and timing.
  • Input/output interface 130 mediates transmission and reception of data between external device 140 and control section 100.
  • Input/output interface 130 includes, for example, either one of various serial interfaces or various parallel interfaces, or a combination thereof.
  • External device 140 is, for example, a personal computer, and supplies an image recording instruction (a print job) and image data to control section 100 through input/output interface 130.
  • FIG. 3 is an enlarged view near an end section of supporting member 4. Note that a lateral direction in FIG. 3 corresponds to a width direction of conveying belt 23.
  • supporting member 4 is a quadrangular-prism-shaped metal member (e.g., aluminum) extending in the width direction of conveying belt 23, and entirely supports the width direction of conveying belt 23 from the inner periphery side of conveying belt 23. Note that, only one side of the end section of supporting member 4 (a right end section in FIG. 3 ) is illustrated in FIG. 3 , and an illustration and a description of the other end section of supporting member 4 are omitted because a configuration around supporting member 4 is symmetrical on both sides in the width direction.
  • a quadrangular-prism-shaped metal member e.g., aluminum
  • End section 4A of supporting member 4 is fixed to side wall 6 provided on both sides in the width direction of conveying belt 23, which is the outside of end section 4A of supporting member 4, in image forming apparatus 1.
  • a square flat part of the rectangular-prism-shaped supporting member 4 is disposed so as to face conveying belt 23.
  • Side wall 6 corresponds to "fixing member" of the present invention.
  • End section 4A of supporting member 4 is formed with hole 4B in which screw member 7 can be inserted.
  • side wall 6 is also formed with hole 6A in which screw member 7 can be inserted through. Screw member 7 fixes end section 4A of supporting member 4 to side wall 6 by being inserted into hole 4B of supporting member 4 via side wall 6. That is, end section 4A of supporting member 4 is fixedly supported by side wall 6 and screw member 7.
  • End section 4A of supporting member 4 is pulled toward outside the width direction of conveying belt 23 (see an arrow) by being fixed in this manner.
  • supporting member 4 is relatively moved to a side of side wall 6 with respect to the immovable side wall 6 and screw member 7 by inserting screw member 7 into end section 4A of supporting member 4. That is, side wall 6 and screw member 7 apply a load to pull supporting member 4 to the side of side wall 6.
  • Side wall 6 and screw member 7 correspond to "pulling section" of the present invention.
  • Both end sections of supporting member 4 are pulled to opposite sides to each other by side walls 6 and screw members 7 since the configuration around supporting member 4 is symmetrical on both sides in the width direction as described above.
  • a first end section of supporting member 4 in the width direction e.g., a right end section in FIG. 3
  • a second end section of supporting member 4 in the width direction e.g., a left end section that is not shown in FIG. 3
  • side walls 6 and screw members 7 that correspond to the respective end sections.
  • FIG. 4 illustrates an example of a configuration of fixedly supporting both end sections of predetermined supporting member 10.
  • a central part in a width direction of supporting member 10 is lowered by its own weight, thereby causing supporting member 10 to deform to a state in which the central part is deflected. Therefore, belt member 11 supported by supporting member 10 also possibly deflects in response to the deflection, and there is a risk that a flatness of belt member 11 cannot be secured.
  • a gap between belt member 11 and an image forming section cannot be accurately adjusted at the time of adjusting the gap.
  • end section 4A of supporting member 4 is pulled toward outside the width direction of conveying belt 23 as illustrated in FIG. 5 .
  • This configuration reduces a deflection amount of a central part of supporting member 4 caused by the central part in the width direction of supporting member 4 being lowered by its own weight That is, side walls 6 and screw members 7 are configured to pull end sections 4A of supporting member 4 so as to correct a deflection deformation of the central part of supporting member 4, thereby reducing a deflection of conveying belt 23 in response to the deflection of supporting member 4.
  • conveying belt 23 can be secured in the present embodiment. Consequently, a desired image can be formed on recording medium P passing through an image forming area, and a gap between conveying belt 23 and recording head 3 can be accurately adjusted at the time of adjusting the gap.
  • a tensile load applied to supporting member 4 enables to have a simple configuration because it is not necessary to provide an adjustment mechanism.
  • supporting member 4 is configured to be fixed so as not to rotate since both end sections of supporting member 4 are fixed to side walls 6 by screw members 7.
  • supporting member 4 When supporting member 4 is rotatably fixed, there is a risk that the flatness of conveying belt 23 is deteriorated by rotation of supporting member 4. For example, when a section corresponding to a corner of supporting member 4 in a rectangular prism shape faces to conveying belt 23, a state of conveying belt 23 is fluctuated by the corner, and thus the flatness is deteriorated.
  • both end sections of supporting member 4 are individually fixed in this configuration, when a manufacturing error occurs at each end, for example, a tightening degree of screw member 7 on both sides can be adjusted separately. As a result, adjusting a fixed state of supporting member 4 for each end section makes it easy to maintain the flatness of conveying belt 23 by supporting member 4.
  • two supporting members 4 are provided at two positions, specifically, upstream and downstream sides of the portion of conveying belt 23 corresponding to the image forming area, in such a manner that the image forming area is positioned between two supporting members 4. Consequently, the flatness of the section corresponding to the image forming area of conveying belt 23 can be maintained by both the upstream side and the downstream side, and thus the flatness of the section corresponding to the image forming area of conveying belt 23 can be further easily secured.
  • the fixing portions of the end sections of supporting member 4 are provided in the central part in a direction in which supporting member 4 and conveying belt 23 face each other (a vertical direction), but the present invention is not limited thereto.
  • the fixing point of the end section of supporting member 4 may be a portion closer to conveying belt 23 from the central part of supporting member 4 (see a broken line C) in the facing direction as illustrated in FIG. 6 .
  • side wall 6 and screw member 7 pull a portion closer to conveying belt 23 from the central part of supporting member 4 in the facing direction.
  • pulling a portion closer to conveying belt 23 from the central part of supporting member 4 in the facing direction allows to weaken a pulling force compared to a configuration of pulling an opposite side portion to conveying belt 23 from the central part.
  • weakening the force for pulling supporting member 4 makes it possible to easily adjust conveying belt 23. Accordingly, force required for adjustment of conveying belt 23 can be reduced, thereby improving an adjustability of conveying belt 23.
  • the side of supporting member 4 facing conveying belt 23 is easily deformed by positioning the fixing point of supporting member 4 on the side of conveying belt 23, but the present invention is not limited thereto.
  • the section modulus of first portion 41 of supporting member 4 may be configured to be lower than the section modulus of second portion 42 of supporting member 4 as illustrated in FIG. 7 .
  • a lateral direction in FIGS. 7 to 9 corresponds to a conveying direction of conveying belt 23.
  • First portion 41 is a portion closer to conveying belt 23 from the central part of supporting member 4 (see a broken line C) in the facing direction of supporting member 4 and conveying belt 23.
  • Second portion 42 is a portion other than first portion 41 of supporting member 4 and is on the opposite side of conveying belt 23 with first portion 41 therebetween.
  • Supporting member 4 shown in FIG. 7 is configured to have a trapezoidal shape in a cross-sectional view, and surface 41A of first portion 41, which is an upper bottom part in FIG. 7 , is shorter than surface 42A of second portion 42, which is a lower bottom part in FIG. 7 .
  • First portion 41 is also more easily deformed than second portion 42 in such a manner. That is, the side of supporting member 4 facing conveying belt 23 can be easily deformed, and thus it is possible to easily secure the flatness of conveying belt 23.
  • first portion 41 may be softer than the material of second portion 42 as illustrated in FIG. 8 .
  • first portion 41 is made of plastic such as polyacetal (POM), and second portion 42 is made of metal.
  • POM polyacetal
  • First portion 41 is more easily deformed than second portion 42 even in such a manner. That is, the side of supporting member 4 facing conveying belt 23 can be easily deformed, and thus it is possible to easily secure the flatness of conveying belt 23.
  • first portion 41 may be formed with hollow section 41B as in a configuration illustrated in FIG.9 .
  • supporting member 4 includes hollow section 41B that is located closer to conveying belt 23 from the central part (see a broken line C) in the facing direction of supporting member 4 and conveying belt 23.
  • Hollow section 41B extends in the width direction and penetrates supporting member 4.
  • First portion 41 is more easily deformed than second portion 42 even in such a manner. That is, the side of supporting member 4 facing conveying belt 23 can be easily deformed, and thus it is possible to easily secure the flatness of conveying belt 23.
  • supporting member 4 when supporting member 4 is formed of a resin member or the like rather than a metal member that has high rigidity, the rigidity of the entire supporting member 4 can be secured by second portion 42 that is not formed with a hollow section.
  • hollow section 41B may be formed not only in first portion 41 but also in the entire supporting member 4 in the facing direction, for example.
  • both end sections of supporting member 4 are each fixed by side wall 6 and screw member 7 in the embodiment described above, but the present invention is not limited thereto, and only one of the end sections of supporting member 4 may be fixedly supported by side wall 6 and screw member 7.
  • first end section 4A of supporting member 4 in a width direction of an apparatus (a right end section in FIG. 10 ) is fixedly supported by a right side wall 6 and screw member 7.
  • First end section 4A is disposed at a space from the right side wall 6.
  • second end section 4C of supporting member 4 in the width direction (a left end section in FIG. 10 ) is fixedly supported by a left side wall 6 of the apparatus.
  • second end section 4C is fixed by being fitted into side wall 6.
  • supporting member 4 is configured so that second end section 4C is fixed to the left side wall 6 (a member other than pulling section) and first end section 4A is fixedly supported by the right side wall 6 and screw member 7 (pulling section).
  • pulling section is composed of side wall 6 and screw member 7 in the embodiment described above, but the present invention is not limited thereto, and it may be composed of an air cylinder, for example.
  • pulling section 8 includes piston section 81 that is fixed to an end section of supporting member 4, and a cylinder section 82 that supports piston section 81 movably in a lateral direction.
  • Pulling section 8 enables piston section 81 to pull supporting member 4 outward by adjusting air pressure in cylinder section 82.
  • the flatness of conveying belt 23 can be secured even with this configuration, and thus the gap between conveying belt 23 and recording head 3 can be accurately adjusted.
  • pulling section may be configured to include energizing member 83 that energizes the end section of supporting member 4 toward outside of conveying belt 23.
  • Extension member 43 is provided on end section 4A of supporting member 4 that is illustrated in FIG. 12 .
  • Extension member 43 includes extension section 43A extending from end section 4A of supporting member 4, and press section 43B provided at a distal end of extension section 43A.
  • Extension section 43A is formed in a cylindrical shape, and is supported by side wall 6 that is provided outside of end section 4A of supporting member 4 in image forming apparatus 1.
  • Pressing section 43B is configured to have a larger diameter than extension section 43A, and is located outside side wall 6.
  • Energizing member 83 is a spring provided between side wall 6 and pressing section 43B. Energizing member 83 energizes press section 43B outward with respect to side wall 6. Side wall 6, extension member 43 and energizing member 83 correspond to "pulling section" of the present invention.
  • extension member 43 may be separate from supporting member 4.
  • supporting member 4 has the square prism shape in the embodiment described above, but the present invention is not limited thereto, and may have a cylindrical shape, for example. Further, when a supporting member has a cylindrical shape, it may be fixed so as to be rotatable.
  • supporting member 4 has the quadrangular prism shape in the embodiment described above, but the present invention is not limited thereto, and may have a triangular prism shape or other polygonal prism shapes. However, from a viewpoint of stabilizing the flatness of conveying belt 23, it is preferable that a flat part of the prismatic shape is placed to face conveying belt 23.
  • conveying belt 23 that conveys recording medium P is exemplified as the belt member in the embodiment described above, but the present invention is not limited thereto, and it may be an intermediate transfer belt or the like, for example.
  • a configuration based on the inkjet printing system is exemplified as the image forming section using an example of recording head 3 including inkjet heads in the embodiment described above, but the present invention is not limited thereto, and other configurations than the inkjet printing system may be used as the image forming section.
  • supporting members 4 are provided with the image forming area in between in the embodiment described above, but the present invention is not limited thereto.
  • supporting member 4 may be provided at any position as long as the position corresponds to the image forming area such as within the range of the image forming area, the range between driving roller 21 and the end of the image forming area, and the range between driven roller 22 and the other end of the image forming area.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Ink Jet (AREA)
  • Handling Of Sheets (AREA)

Claims (15)

  1. Installation (1) de formation d'image comprenant :
    un élément (23) à courroie sans fin ;
    une partie (3) de formation d'image, qui est disposée de manière à faire face à l'élément (23) à courroie et qui est configuré pour former une image dans une zone de formation d'image faisant face à l'élément (23) à courroie ;
    un élément (4) supportant, qui s'étend dans une direction en largeur de l'élément (23) à courroie et qui a une partie plate disposée de manière à faire face à l'élément (23) à courroie, à partir d'un côté périphérique intérieur de l'élément (23) à courroie, qui supporte entièrement la direction en largeur de l'élément (23) à courroie en une position correspondant à la zone de formation d'image de l'élément (23) à courroie ; et
    une partie (6, 7 ; 8 ; 6, 43, 83) de traction, qui est configuré pour tirer une partie (4A) d'extrémité de l'élément (4) supportant vers l'extérieur dans la direction en largeur de l'élément (23) à courroie.
  2. Installation (1) de formation d'image suivant la revendication 1, dans laquelle la partie (6, 7 ; 8 ; 6, 43, 83) de traction est configurée pour tirer la partie (4A) d'extrémité de l'élément (4) supportant, de manière à corriger une déformation par fléchissement d'une partie centrale de l'élément (4) supportant dans la direction en largeur.
  3. Installation (1) de formation d'image suivant la revendication 1 ou 2, dans laquelle la partie (6, 7) de traction est configurée pour tirer une partie plus près de la courroie (23) convoyeuse à partir de la partie centrale de l'élément (4) supportant dans une direction faisant face de l'élément (4) supportant et de l'élément (23) à courroie.
  4. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 3, dans laquelle
    l'élément (4) supportant comprend une première part (41), qui est plus près de l'élément (23) à courroie à partir de la partie centrale de l'élément (4) supportant dans la direction faisant face de l'élément (4) supportant et de l'élément (23) à courroie, et une deuxième part (42), qui est une part autre que la première part (41) ; dans laquelle
    un module de partie de la première part (41) est plus bas qu'un module de partie de la deuxième part (42).
  5. Installation (1) de formation d'image suivant la revendication 4, dans laquelle un matériau de la première part (41) est plus souple qu'un matériau de la deuxième part (42).
  6. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 5, dans laquelle l'élément (4) supportant est fixé de manière à ne pas pouvoir tourner.
  7. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 6, dans laquelle :
    la partie (6,7) de traction est prévue d'un côté d'une première partie (4A) d'extrémité de l'élément (4) supportant dans la direction en largeur ;
    une deuxième partie (4C) d'extrémité de l'élément (4) supportant dans la direction en largeur est supportée fixement par un élément autre que la partie (6, 7) de traction ; et
    la première partie (4A) d'extrémité de l'élément (4) supportant dans la direction en largeur est supportée fixement par la partie (6, 7) de traction.
  8. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 6, dans laquelle :
    la partie (6, 7 ; 8 ; 6, 43, 83) de traction est prévue en correspondance à chacune des deux extrémités de l'élément (4) supportant dans la direction en largeur ; et
    la première partie (4A) d'extrémité de l'élément (4) supportant dans la direction en largeur et la deuxième partie (4C) d'extrémité de l'élément (4) supportant dans la direction en largeur sont supportées fixement par des parties (6, 7) de traction correspondantes.
  9. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 8, dans laquelle :
    il est prévu au moins deux des éléments (4) supportant ; et
    les au moins deux éléments (4) supportant sont disposés de manière à ce que la zone de formation d'image soit placée entre les au moins deux éléments (4) supportant.
  10. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 9, dans laquelle la partie (6, 7) de traction comprend :
    un élément (6) de fixation placé à l'extérieur de la partie (4A) d'extrémité de l'élément (4) supportant ; et
    un élément (7) de vis inséré dans à la fois l'élément (6) de fixation et la partie (4A) d'extrémité de l'élément (4) supportant.
  11. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 9, dans laquelle la partie (8) de traction est un vérin pneumatique comprenant :
    une partie (81) de piston, qui est fixée à la partie (4A) d'extrémité de l'élément (4) supportant ; et
    une partie (82) de cylindre, qui supporte de manière mobile la partie (81) de piston.
  12. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 9, dans laquelle la partie (6, 43, 83) de traction a un élément (83) de sollicitation, qui sollicite la partie (4A) d'extrémité de l'élément (4) supportant vers l'extérieur de l'élément (23) à courroie.
  13. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 12, dans laquelle l'élément (4) supportant a une partie (41B) creuse s'étendant dans la direction en largeur.
  14. Installation (1) de formation d'image suivant la revendication 13, dans laquelle la partie (41B) creuse est placée plus près de l'élément (23) à courroie à partir de la partie centrale de l'élément (4) dans la direction se faisant face de l'élément (4) supportant et de l'élément (23) à courroie.
  15. Installation (1) de formation d'image suivant l'une quelconque des revendications 1 à 14, dans laquelle l'élément (4) supportant est sous la forme d'un prisme ou sous une forme cylindrique.
EP20196952.4A 2019-09-20 2020-09-18 Appareil de formation d'images Active EP3796096B1 (fr)

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JP2019171472A JP7383950B2 (ja) 2019-09-20 2019-09-20 画像形成装置

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217533A (ja) * 1990-12-13 1992-08-07 Fuji Xerox Co Ltd ベルト搬送装置
JPH08156353A (ja) * 1994-10-07 1996-06-18 Canon Inc プリント装置
US6600507B2 (en) * 2001-10-22 2003-07-29 Xerox Corporation Photoreceptor belt tracking apparatus employing an actuated edge guide system and low lateral force rollers
JP2004012585A (ja) * 2002-06-04 2004-01-15 Kyocera Corp ベルト搬送装置
US6594460B1 (en) * 2002-09-10 2003-07-15 Xerox Corporation Low force lateral photoreceptor or intermediate transfer belt tracking correction system
JP2008247595A (ja) * 2007-03-30 2008-10-16 Fuji Xerox Co Ltd ベルト回動装置及び画像形成装置
JP5193738B2 (ja) * 2008-08-15 2013-05-08 理想科学工業株式会社 インクジェット記録装置
JP5982863B2 (ja) * 2012-02-23 2016-08-31 富士ゼロックス株式会社 転写装置及び画像形成装置
JP2013231809A (ja) * 2012-04-27 2013-11-14 Canon Inc 画像形成装置
JP6061560B2 (ja) * 2012-08-29 2017-01-18 キヤノン株式会社 シート搬送装置及び画像形成装置

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JP2021045940A (ja) 2021-03-25
JP7383950B2 (ja) 2023-11-21

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